The gitops-auto-complete uses `replace github.com/fleetdm/fleet/v4 =>
../..` which means it is frequently broken whenever fleet updates shared
libraries.
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## Summary by CodeRabbit
* **Chores**
* Added automated build and dependency verification for the GitOps
auto-complete tool.
* Updated workflow triggers so changes to the tool are checked
automatically.
* Refreshed supporting service dependencies used by the tool.
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This is needed to keep tools up to date with latest go.mod. Goal is for
these tools to have separate go.mod to reduce tool dependency on
production/main `go.mod`.
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Chores**
* Expanded automated validation to cover both tool modules, including
builds, dependency tidiness checks, and applicable tests.
* Added a `make tidy-tool-modules` command to tidy supported tool
dependencies automatically.
* Added validation for tool changes and root Go module updates.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Luke Heath